parse.y: suppress warning in ripper

* parse.y (rb_discard_node_gen): rb_discard_node() is not used in
  ripper right now.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60645 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/parse.y b/parse.y
index e6bb2956e2..e42763015d 100644
--- a/parse.y
+++ b/parse.y
@@ -349,12 +349,14 @@ static int parser_yyerror(struct parser_params*, const char*);
 
 static enum yytokentype yylex(YYSTYPE*, YYLTYPE*, struct parser_params*);
 
+#ifndef RIPPER
 static inline void
 rb_discard_node_gen(struct parser_params *parser, NODE *n)
 {
     rb_ast_delete_node(parser->ast, n);
 }
 #define rb_discard_node(n) rb_discard_node_gen(parser, (n))
+#endif
 
 static inline void
 add_mark_object_gen(struct parser_params *parser, VALUE obj)